A participant of the Mud Day athletic event looks on, among the mud obstacles in Beynes, west of Paris, France.

A Christie's employee holds the Maria Christina Royal 'Devant-de Corsage' diamond, mounted in silver and gold, broach, which is estimated to sell between 9,500,000 to 12,500,000 US dollar, during a preview at Auction house Christie's, in Geneva, Switzerland.

7/22

French President Francois Hollande rekindles the flame during a ceremony at the Arc de Triomphe marking the 70th anniversary of the end of World War II, in Paris, France.

8/22

Delhi CM Arvind Kejriwal pays homage to the martyrs of Hardinge Bomb case at Shaheed Smarak Sthal in New Delhi.

9/22

President Pranab Mukherjee being conferred with Honorary Doctorate from Russian Diplomatic Academy at a function at the academy in Moscow.

10/22

Maria Sharapova from Russia reacts during her Madrid Open tennis tournament match against Svetlana Kuznetsova from Russia in Madrid, Spain.

11/22

Pakistan’s Younis Khan plays a shot during the third day of the second test cricket match against Bangladesh in Dhaka, Bangladesh.

Britain's Prime Minister David Cameron and his wife Samantha return to 10 Downing Street in London. The Conservative Party surged to a surprisingly commanding lead in Britain's parliamentary election, with returns Friday backing an exit poll's prediction that Prime Minister David Cameron would remain in 10 Downing Street.

14/22

Irene "Smokie" McGhee, a woman who had been sleeping on the streets in a South Los Angeles neighborhood, listens to music on the doorway of her newly built tiny home in Los Angeles. It is unclear if the city would enforce rules for these homes. Smokie said police have told her she won’t be bothered as long as she moves the home , small enough to fit in a parking space, every three days.

15/22

Air Force Defensive back Christian Spears, left, and quarterback Kale Pearson, right, smile as President Barack Obama poses with a football and jersey they gave him during an event in the East Room of the White House in Washington.

16/22

River Plate fans light a flare before the start of a Copa Libertadores soccer match against Argentina's Boca Juniors in Buenos Aires, Argentina.

First Minister of Scotland and Scottish National Party leader Nicola Sturgeon, center, celebrates with the results for her party at the count of Glasgow constituencies for the general election in Glasgow, Scotland

19/22

Union Minister for Road Transport & Highways and Shipping, Nitin Gadkari calling on the President of Iran, Mohsen Rouhani, in Tehran.

20/22

Britain's Andy Murray returns the ball during his Madrid Open tennis tournament match against Marcel Granollers from Spain in Madrid

21/22

A woman walks through the Genghis Khan: Bring the Legend to Life exhibit during a press preview, at the The Franklin Institute in Philadelphia.

22/22

Nepalese people pay tributes to the victims of the April 25 earthquake, as they light candles near the destroyed landmark Dharahara tower in Kathmandu.